This project controlled an infestation of the non-native invasive aquatic plant Ludwigia in two areas of the Laguna de Santa Rosa channel by mechanical removal and application of an herbicidal treatment.

Project Identification

ID

Type

536

JV - Record Number

Habitat Plan

Activity

Habitat

SubHabitat

Acres

Activity Status

Water Regime

Enhancement

Seasonal Wetland

Unknown/Unspecified

150.0

Completed

Seasonal non-tidal

Related Habitat Impacts

Habitat

Acres Lost

Type of Loss

No Data

Sites

Name

Status

Acres

Laguna de Santa Rosa Ludwigia Control

Completed

150.0

Laguna de Santa Rosa Ludwigia Control

Completed

No Data

Events

Date

Type

Description

Site Name

2008-09-30

Project end date

2004-01-01

Project start date

People

Type

Name

Organization

Department

Contact

Hattie Brown

Laguna de Santa Rosa Foundation

Not applicable/Unknown

Contact

Wendy Trowbridge

Laguna de Santa Rosa Foundation

Not applicable/Unknown

Funding

Activity

Funder

Amount

Enhancement

SCC State Coastal Conservancy

Enhancement

Sonoma County Water Agency

$740,000

Enhancement

WCB Wildlife Conservation Board

$560,000

Enhancement

City of Santa Rosa

$450,000

Enhancement

Marin-Sonoma Mosquito and Vector Control District

$300,000

Related CRAM Assessments

Visit Date

Version

Site Name

Wetland Type

Index Score

2013-10-03

6.1

The Farm Historic Ditch

riverine non-confined

67

2013-09-27

6.1

Reservoir Slope

forested slope

80

2013-09-24

6.1

Gallo Forest

forested slope

2013-09-24

6.1

Gallo Island

perennial/seasonal depressional

76

2013-09-20

6.1

Occidental Road Unit Slope 11

forested slope

87

2013-09-11

6.1

Occidental Road Unit depression middle

perennial/seasonal depressional

77

2013-09-11

6.1

Occidental Road Unit depression south

perennial/seasonal depressional

74

2013-09-11

6.1

Occidental Road Unit depression north

perennial/seasonal depressional

68

2013-08-13

6.1

Occidental Laguna

channeled wet meadow

81

2013-08-02

6.1

Lynmar Slope

forested slope

88

2013-08-02

6.1

Ben's Slope

forested slope

86

Performance Criteria

How to Use the Habitat Development Curve

Habitat Development Curves (HDCs) are used to determine the developmental status and trajectory of on-the-ground projects to create, restore, or enhance California wetland and stream habitats. Each HDC is based on assessments of habitat condition for different age areas of one habitat type that in aggregate represent the full spectrum of habitat development. The assessments of condition are provided by expert applications of the California Rapid Assessment Method (CRAM). Visit the CRAM website for more information about CRAM.

For each HDC, reference condition is represented by areas of a habitat that consistently get very high CRAM scores, have not been subject to disruptive management practices, and exist within landscapes that are protected and managed for their natural conditions. The horizontal lines intersecting the top of an HDC represent the mean CRAM score and standard deviation of scores for 25 qualifying reference areas.

The age of a project is estimated as the elapsed time in years between the groundwork end date for the project and the date of the CRAM assessment. To add or update a groundwork end date, use the Project Events form in Project Tracker (ptrack.ecoatlas.org). The minimum age in years of a non-project area, including any natural reference area, is estimated from all available local information, including historical maps and imagery, historical written accounts, and place-specific scientific studies of habitat development.

An HDC can be used to address the following questions:

At what time in the future will the area of assessed habitat achieve the reference condition or other milestones in habitat development? The HDC can answer this question if the CRAM score for the assessed area is within the confidence interval of the HDC. The answer is the time in years along the HDC between the current age of the assessed area and the future date corresponding to the intersection of the HDC and the reference condition or other milestone.

Is the area of assessed habitat likely to develop faster, slower, or at the same pace as most other areas of the same habitat type? The habitat area is likely to develop faster, slower, or at the same pace if the CRAM score for the area is above, below, or within the confidence interval of the HDC, respectively.

What can be done to improve the condition of the habitat area or to increase its rate of development? HDCs by themselves cannot answer this question. Possible answers can be inferred by the following analysis that involves HDCs:

Examine the HDC for each of the four CRAM Attributes;

Identify the Attribute(s) scoring below the HDC;

For any low-scoring Attribute, examine the component Metric Scores (note: the Metric Scores for any public CRAM assessment in the CRAM database can be obtained through EcoAtlas);

Assume the low score of an Attribute is due to its low-scoring Metric(s);

Consider modifying the design or management of the habitat area in ways that will sustainably increase its score(s) for the low-scoring Metric(s).

For more information about CRAM Attributes and Metrics, including their scientific rationale, see the CRAM Manual.